Sewing-machine.



J. LEATHER/L SEWING MAGHlNE. APPLIGATIONTILBD'JULY 5, 1912.

'l 099 655m mente@ Jun@ 9', 1914.

hehhn ease inte The extreme 1 li in sl'ightiy orinii g an i 1G,Gi'eriapping very siightiy the of the hohhin eaee, ani so hoidiiig; thahhin ease in piace. lhe Overlap i' se siight, and the spring action ofthe Sp sides 01"' the hohbin case is sach, iirmlewei. that it is easy te'force the hehhin ease inta or out ai the hoek, the Spring @idee mi thehehhin Case yielding' iightiy te permit this Upon the side ef the hohhincase T is secured a tene'an Spring 3.7, which is er". usualconstruction, except that it is pro- Tvided with a lip 3.8 prnjefictingin a direc tien suhstantiaiiy paadei with the rotative action ef' thestrectiire, and is adapted to he engaged hy ay crew l?) mounted in asuitable screw hole in the edge f1 nge et hohhin Case. Ty tzr r ntf thisscrew 19 in er out, the tension eXer ,i hy the Spring; l? upon thethread may he varied desired.

The hoek 1 is provided in its side with suitable openings 2l throughwhich a Suitahie instrunient magY he intreduced' to pry the hnhhin casemit of said hook. n inserting; the hohhin ease inte 'the hoek the pres-/snre oit the ingers sufficient te press it l/heine it is very desiahiethat heeks or hieptaiiers :auch is shown in the drawings, shaii he inrotative haiance. The thread slot iightens the' hoek considerably on oneside, and unless a eorrespending amount et' metal he takenoutsahstantiaiiy diemetricady ep- 1hesite the hook out of haianee. havefound that the heet way to eounterhaianee fm hook 'to compensate fer theabsence et ea e e i nwardiy tu l metal incident te the thread slet G, iswref duce the thickness of the meta of the side of the loep-takerdizzmeti'ieaiiy crepes'. e the thread sint, To this end, and as is showpartieiiiarly in Fig. 8 the sides of 'ti loep taker are (.rhanaheredvont or eut away hetween peints 22 and 28, on the side ofthe Loop takeropposite thread shit 6,

To remove the hohbin from the hoek, a suitable instrument is introduced'through @ne of the openings Q1, between the bottom of the bohhin Caseand the betteln wail oi the hook.y and one of the hohhin ease is priedout, the spring leaves forming the greater portion O' the side oi thebohhin ease yielding to permit this. lt is then easy to remove thebobhin ease; and of course, once the bohhin case has been removed fromthe hook it is easy to remove the behhin rein the bohoin case.

In replacing' the parte, the bobhin is placed Within the hehhin ease,and the hitter iethen pinned Within the hook and pressed home, theA"infr sides 'of the bohhin ease the ici-enge to pass the rib i6. i

To facilitate.

eohhn, from Lhihll' loves Q unending frein th hahhin mitte the sev-eralheiee desired to .i me r hohhin fr ein a neej' 5*"iiinent is intr 5under the top Piate o hin and then hf; this need'ie er athe nient thehehhi` ineif he willed out. van he dene 'i but :m5T eiittinpp o wea.wound upon the. In the side th This ihech Withth e thread hin. e hohhinprnxiinitv te 'the tension spi-gin.

thread 5mt :23, the enter ein :z hin (fr ist proiided with a phirf-ine'i ziread retainiii' groei 'ire finite shalt size as aV 'i pta tieni to heid mamen needie iiii'ead er 'top thref fr iviiiie i around thehnhilin CaSe e known, the action or a fiordi ieh eerihefh and of itshehbin can eedie thread er 'iep Baring 'the retaimi d i zip-takers the.haai; pases .C Y' 4 Lght or hiep m the n needle thread deiifn te thehase slet C; 1"@ eth needie thi more or the hehhin )ehhin k. Exte'pt forthe 'thyead retaining groei-'es 2T et the hebhin ease, hoth sii 'i thehight ef needie thread 'wii he carried around ti hnhnii'i e; se Withoutpass t und-erw th tie techhin and so without engaging the underneath thei of? from the haa -d the eieet o 'which is to carry one side of thehight ef the ioop of nedie thread in Giese to the Side of the hehhinease, so Causing the needie thread to engage one or another of thethread re 'aining gre-eres er" 'that hohbin @ne advantage et theconstruction of hohhin ease herein described, e'. e., the provision of aiarge numher er spring ieaves in the.

side of the bebhin ease, is, thea; in cese the the thread Looeot bobbincase becomes Worn or the racewey of the loop-hiker l becomes Worn, tosuch extent that the bobbin ease might Hy out ot' the meeway, it is easyby removing the bobbin, and inserting a suitable tapered mandrel in thebobbin case, to spring out the sides of the bobbin case, giving them apermanent set, snliicient to cause thern to engage properly in thegroove of the loop-taker.

1*That I claim is:

l. The combination with a hook, oi' n bobbin cese adapted to lit within'seid hook,

Vsaiol bobbin ense having side slits forming,

in seid side, springs, said hook having a. rib which said side springeare adapted to en gage when the bobbin cose is in place Within the hook,whereby bobbin 'ease and hook are normally held together.

2. The combination of a hook and bobbin case, the hook adapted to'receive the bobbin ease Within it and having a rneeway for such bobbin@use and having, beyond seid racewoy, an inwardly projecting rib, thebobbin ease, having a projecting :flange adapted to work Within Saidrueewuy und to engage said inwardly projeetinglrib et' the hook, saidbobbin case having' iii-A. ite eide slits dividing said sides intospringlenves, whereby the bobbn case is helct Within the hookby'jengagenient of said springM leaves with the inwardly projecting ribof the hook.

3. A., hobbin ense comprising a hollow' member adapted to receive abobbin :1nd to fit Within a hook said bobbin euse having in its sides,slits dividing auch sides into spring provided with spring means forretainino' thel bobbin ense within the hook, said hooh provided with enaperture adapted for the insertion of an instrument between the bottoniof the bobbin ease and the bottom Wall of the hook, whereby lthe bobbinease may be pried ont of the hook by .fm instrument introduced throughsuch aperture.

In testimony whereof have signed this specification in the presence oftwo subscrbing witnesses.

JAMES LEATHEM. `/l/rtnesses t H. M. MARBLE, l), A. Duras,

